Controller attachment for addressing machines



March 5, 1946. w. c. PFEIFFER CONTROLLER ATTACHMENT FOR ADDRESSINGMACHINES Filed Feb. 12, 1940 11 Sheets-Sheet l March 5, 1946. w. c.PFEIFFER CONTROLLER ATTACHMENT FOR ADDRESSING MACHINES Filed Feb. 12,1940 ll Sheets-Sheet 2 March 5, 1946. r w. c. PFEIFFER CONTROLLERATTACHMENT FOR-ADDRESSING MACHINES Filed Feb. 12 1940 ll Sheets-Sheet 3Jam-m lzlamC.

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March 5, 1946. w. c. PFEIFFER CONTROLLER ATTACHMENT FOR ADDRESSINGMACHINES ll Sheets-Sheet 7 Filed Feb. 12, 1940 JmyWm-v' 111111601 1 6'.jczj qr.

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W. C. PFEIFFER CONTROLLER ATTACHMENT FOR ADDRESSING MACHINES March 5,1946.

Filed Feb; 12, 1940 11 Sheets-Shet m mu mmmm Mum vmm mMELH ill/13am CR/Eamh 59%. w. c, PFElFF ER CONTROLLER ATTACHMENT FOR ADDRESSINGMACHINES ll Sheets-Sheet 11 Filed Feb. 12, 1940 Patented Mar. 5, 1946CONTROLLER ATTACHMENT FOR ADDRESSING MACHINES William C. Pfeiffer,Dayton, Ohio, assignor to The Egry Register Company, Dayton, Ohio, a

corporation of Ohio Application February 12, 1940, Serial No. 318,404

2 Claims.

This invention relatesto attachments for addressing machines or similardevices, and more particularly to an automatic controller mechanismadapted to be attached to address printing machines for automaticallyfeeding the continuous sheet forms through the machine.

It is an object of this invention to provide an attachment for addressprinting machines, commonly referred to as Addressographs, comprising anelectric automatic controller for feeding the paper sheets to beaddressed through the machine and to further increase the versatility ofthis type of machine, making it more efficient and adapted for a greaternumber of uses.

Another object of this invention is to provide an improved attachmentfor address printing machines of this type which permits the use ofmultiple copy continuous forms without using one-time pre-insertedcarbons.

Another object is to provide an attachment for printing machines of thischaracter having interleaving carbons between continuous forms by meansof a simple mechanism that automatically advances carbons with eachimpression, so that no two impressions come on exactly the same spot,producing clear, sharp copies, and utilizes the complete surface of thecarbon sheets.

Another object is to devise an auxiliary attachment for address printingmachines whereby the carbon sheets are held in position by carbonholders and are moved between the copy sheets and over the printingplate automatically so that the entire surface of the carbon paper isused.

Another object is to provide an improved mechanism for feeding multiplecopy continuous forms to a printing machine wherein the carbon sheetsare floated between the forms and automatically shifted so as to presentnew carbon surfaces after each printing operation and wherein simplifiedmeans is provided for install- 'ing new paper during use.

Another object is to provide an automatic controller attachment forprinting machines of this type for feeding continuous forms into themachine and holding the copy forms in perfect registration irrespectiveof the number of copies used and the speed of operating the machine.

Still another object is to provide an automatic feeder attachment foraddress printing machines which will operate in synchronism with theoperation of the printing machine and automatically feeds a continuousstrip of paper or multiple copy forms from a fan-folded pack through themachine whereby the forms are printed upon and thereafter restacked in afan-folded pack.

These and other objects and advantages will be apparent to those skilledin the art fromthe following description taken in connection with thedrawings in which:

Figure 1 is a perspective view of an address printing machine providedwith the automatic feeding attachment of this invention;

Figure 2 is a side elevation view of the address printing machineshowing the feeder mechanism in detached position;

Figures 3, 4, 5 and 6 are fragmentary side elevation views illustratingthe different operating positions of the reciprocating tripping armmechanism for initiating engagement of the clutch to bring aboutoperation of the continuous form feeding mechanism;

Figure '7 is a plan view of the mechanism for engaging and moving thecontinuous sheet forms through the machine;

Figure 8 is a vertical sectional view taken substantially on the line8-8 of Figure '7 and looking in the direction of the arrows;

Figure 9 is a detail elevation view of the latch mechanism for removablyattaching the auxiliary form feeding attachment to the addressingmachine;

Figure 10 is a detail fragmentary view illustrating the manner offastening the support for the fan-folded stack of continuous sheets inposition to be fed into the address printing machine;

Figure 11 is a plan view of one form of carbon paper feeding mechanism,partly in section, with certain associated parts of the machine beingbroken away to more clearly illustrate the construction of themechanism;

Figure 12 is a fragmentary elevation view taken substantially on theline 'l2-|2 of Figure 11,

showing the gear train utilized for operating the carbon feedingmechanism shown in Figure 11;

Figure 13 is a detail view of the ratchet and pawl means on the carbonfeeding mechanism taken substantially on the line l3-l3 of Figure 11,looking in the direction of the arrows;

Figure 14 is a plan view, partly in section,

showing the interleaved arrangement of the continuous forms and carbonsheets with associated mechanism;

Figure is a vertical sectional view taken through the carbon sheetfeeding mechanism illustrated in Figure 14 and taken substantially onthe line l5l5 of Figure 14;

Figure 16 is a detail sectional view taken on the line Iii-16 of Figure14 and looking in the direction of the arrows;

Figure 17 is a side elevation view of the frame and associated parts forsupporting the carbon sheet rolls;

Figure 18 is a similar front elevation view of the carbon sheet rollsupport showing the spring pressed retarding means associated therewith;

Figure 19 is a detail perspective view illustrating the arrangement ofthe carbon feeding mechanism including the ratchet and pawl mechanism;

Figure 20 is a view in perspective illustrating the positioning of thecarbon sheets interleaved between the continuous paper printed forms andthe electrical conducting members associated therewith;

Figure 21 is a vertical sectional view of the carbon sheet feedingmechanism adjacent the knurled carbon feeding rollers and takensubstantially on the line 2 l-ZI of Figure 14;

Figure 22 is a detail view showing the construction for securing thecarbon paper feed rolls in place;

Figures 23 and 24 are side elevation views of the clutch mechanismillustrating the tripping means for initiating operation of the clutchand actuation of the feeding mechanism whereby the continuous sheetforms are advanced a prededetermined distance through the machine;

Figure 25 is an elevation view, partly in section, of the addressprinting press means showing the address printing plate and interleavedpaper sheet forms in position for printing;

Figure 26 shows a portion of a typical continuous sheet after havingbeen advanced through the address printing machine and having an addressprinted in the proper place thereupon;

Figure 27 represents a typical address plate for printing upon the sheetforms with attached printed index card;

Figure 28 represents a plan View, partly in section, of a modified screwtype carbon sheet holder and feeding mechanism for use with continuoussheet forms which comprise a lengthwise folded section;

Figure 29 is a sectional view taken substantially 0n the line 29-49 ofFigure 28 showing the manner of floating carbon paper between the copysheet forms;

Figure 30 is a detail elevation view of the screw type carbon feedingmechanism illustrated in Figure 28;

Figure 31 is a fragmentary detail view of mechanism for attaching thecarbon sheet holder means to the supporting side screws;

Figure 32 is a sectional View taken on-the line 32-32 of Figure 1 andshowing the structural arrangement of the carbon holder and transversefeeding means;

Figure 33 is a similar sectional view as Figure 32 showing thestructural details of the carbon holder and arrangement fordisconnecting the carbon holder members from the screw shaft forresetting the carbon feeding mechanism.

In general, it has been the practice to supply names, addresses andother constant informathe reciprocating lever 46.

tion on continuous forms, invoices, statements, payroll checks, etc., bythe use of printing machines utilizing printing plates or the likehaving the desired subject matter embossed or otherwise formed thereon.By the use of such machines printed impressions may be made at the rateof ninety to one hundred per minute. Heretofore, however, it has beennecessary in the making of multiple copies to interleave the carbonsheets by hand and to use one-time pre-inserted carbon duplicatingmeans.

This invention provides an attachment for interleaving carbon betweencontinuous length multiple sheet forms which are to be printed upon atspaced intervals by means of a simple mechanism which automaticallymoves the carbon sheet after each impression. In this way clear, sharpcopies of the printing are made and substantially all the carbon sheetis utilized. By means of this attachment continuous copy sheet forms areautomatically fed to the printing position to be imprinted and thenadvanced into a receiving hopper and fan-folded into a pack. A pack ofthe continuous sheet forms to be printed upon is placed in the feedinghopper of the address printing machine of the attachment and adjusted soas to be fed through the printing machine. The auxiliary feedingmechanism is so designed and connected that it operates in synchronismwith the address printing machine whereby, after each stroke of theprinter stamper arm, the continuous sheet forms are automaticallyadvanced to bring the next form in position to receive an impression,and the interleaved carbon sheets are simultaneously moved so as topresent a new surface.

By the use of the auxiliary feeding attachment of this invention, theoutput of the printing machine may be substantially increased, and thereheretofore time-consuming, tedious, wasteful manual operations ofremoving carbon sheets and pre-arranging the aligning copy sheet sheetforms, etc., are eliminated. Furthermore a more efficient and versatilemachine which is adapted for a great number of uses is provided.

Referring to the drawings in detail, particularly Figures 1, 2, and 25,the feeder attachment of this invention is shown and described as anauxiliary mechanism for use with address printing machines. It will beappreciated, however, that the automatic feeder mechanism of this invention may be used as an attachment for various types of printingmachines to automatically feed continuous sheet material in position tobe printed upon and then advancing the printing sheet into a suitablereceiver where it is stacked in a fan-folded pack.

In the drawings a typical address printing machine is illustratedcomprising a flat tabletop member 40 which is supported by the framegenerally designated 4! having legs 42. A stamper arm 43 carries aroller platen 44 which is arranged to be reciprocated by rod 45 which isattached to When the stamper arm 43 swings forward the roller platen 44is brought down against the paper sheet generally designated 50 which isto be printed upon, and the roller is reciprocated by the back and forthmovement of the member 46.

In the addressing machine shown, multiple copy continuous forms 5!interleave with carbon paper sheets 52 are used. Address plate means 55is utilized as the printing plate and a ribbon 53 is positioned betweenthe printing plate and paper so as to transfer the imprint on the papersheet. The printing plate may be made in different styles as requiredfor producing'the desired imprint. As illustrated in Figure 27, theaddress plate preferably comprises a frame 56 having a removableprinting plate 51 carrying the data to be transcribed, and an adjacentsection 58 for receiving a card index member 59. The printing plate maybe of one-piece construction or made of several pieces.

Extending upward at the back of the platen 44 is a printing platemagazine 60 for holding a stack of printing plates 59 which are advancedfrom the magazine to printing position beneath the ribbon 53 duringoperation of the machine. A motor 52 is suitably arranged for drivingthe machine. Appropriate means, not shown, is also provided forcontrolling the operation of the printing machine.-

Automatic feeder attachment The feeder attachment, as illustrated inFigure 1, comprises in general a hopper I9 which is adapted to receivethe fan-folded pack II of continuous sheet forms to be printed upon.Hopper I is supported over the printing head I2 by means of a bracketI4. Leg members I5 are removably fastened to the inner side of theupright pieces I6 which in turn are secured to the side bars, 11attached to the feeding mechanism generally designated 80, and extendingover the table top 40 at opposite sides of the printing head I2. Theextremities of the legs I5 are grooved as at 8| to receive pins 82 onthe members 15, as illustrated in Figure 10, to removably lock thepieces together.

On the rear side of the hopper there is provided a guide means 84 overwhich the sheet of material to be printed upon is drawn and fed forwardover the table 40 under the printing head 12. A spring guide means 85 issuitably positioned on the hopper Ill and arranged to frictionallyengage upon the surface of the continuous sheet material as it is drawnfrom the hopper III to bring about an orderly removal of the sheetmaterial from the fan-folded pack I I.

Feeder mechanism The mechanism for feeding the continuous forms in theaddressing machine and generally designated 85 comprises an endlesschain feeding means 90 having spaced lugs 9| fixed on the chain linkswhich is adapted to engage in similar spaced holes or slots in thecontinuous sheet 59 being printed, as shown in Figure 8, so as to drawthe sheet material through the printing machine. This mechanism is suported on the frame, generally designated 93, which comprises the legs94. The leg members may be made adiustable in length so as to properlypositioned the feeding mechanism relative to the table 40 of theprinting machine. In the lower part of frame 93 a compartment isprovided for receiving the imprinted sheet forms which are ejected fromthe feeding mechanism. Preferably means are utilized, as at 95, forguiding the printed forms so as to restack them in a fan-folded pack, asshown at 96 in Figure 1.

Intermittent driving of the chain means 99 is effected by means of amotor 99 which is operatively connected through suitable clutch means 99and gearing mechanism to advance the continuous sheet forms an accuratepredetermined distance after each printing operation. The feedingattachment is provided with latch means lDil on each side of the feedingmechanism 89 which is adapted to engage over the extended rod memher I02 positioned at the front of the address printing machine, as shown inFigures 1 and 2.

The latch I00 is constructed as illustrated in Figure 9 and is pivotallyattached to the side of the feeding member 80, as at I03, and isnormally held in horizontal position by the member I I14 so as toautomatically latch the feeding mechanism to the address printingmachine when it is moved up against the front of the machine and inposition for the latches I00 to engage the bar I02, as shown in Figures1 and 2. An extending lug I95 is provided on top of the latch I formanually raising the latch member out of engagement with the bar I02when the feeding attachment is to be disconnected from the addressprinting machine For initiating the operation of the feeding mechanisman actuating lever, generally designated I08, is provided which ispositioned on one side of the feeding mechanism and is supported at theouter end of the feeding mechanism by means of the pin I 89. Adjacentthe other end the lever I08 is supported on the side of the bracketportion I5 by means of the pin I I9. Longitudinal movement of the leverH38 relative to the pin means )9 and III) is provided for by means ofthe slots II2. Adjacent the inner end of the lever I08 a resilientbumper means H4 is provided to engage the forward face of the Stam erarm 43 of the address printing machine, as illustrated in Fi ure 1.Adjustment of the length of the lever I08 is made by means of theslotted bracket member II5 which is fastened to the resilient bumpermeans I I4.

A coil spring means H6 is attached to the operating lever I98, as at II1, and at the other end is secured to the pin I II! on the bracket 15.The spring coil means IIB urges the lever I58 to the right and againstthe stamper arm 43 of the address printing machine so thatit isreciprocated when the stam er arm is moved back and forth during theprinting operation.

Clutch actuating mechanism Mounted on the feeder mechanism 89 adjacentthe reciprocable feed control lever I98 is a clutch member 99 whichfunctions to bring about rotation of the output shaft 24 which isadapted to drive the sprocket I2I carrying the chain 99 a predeterminedamount, such as for example a single revolution. Any suitable mechanismmay be utilized for this purpose which. will upon actuation move thechain 98 engaging the continuous sheet forms a predetermined distanceintermittently as required. Clutch mechanism, such as shown anddescribed in my copending application Serial No. 258,015, filed February23, 1939, may be utilized for this purpose, as illustrated in Figures 23and 24.

This clutch mechanism 99 comprises essentially an. input shaft I23 andan output shaft I24 for driving the endless chain 9i] over the sprocketwheel members I 2I and I22. The output shaft I24 of the clutch mechanismdrives the shaft I 2%! 1 of the sprocket wheel I2! by means of the geartrain illustrated in Figure 12. The input shaft I23 is continuouslydriven by the motor 98 during the operation of the machine and rotationof the output shaft I24 is controlled by the movement of the lockingplate 525. Movement of the locking plate E25 to the left. referring toFigures 23 and 24. disen ages the step portion I26 from the cam I 2'!which is fastened to the output shaft from the shoulder I28 on the plateI25. Rotation of the output shaft I24 is effected by suitable springmechanism within the clutch casing so that when the cam I21 is releasedfrom the locking plate I25 the clutch operates to rotate the outputshaft a predetermined amount such as a complete revolution, asillustrated in Figures 23 and 24.

For shifting the locking plate I25 to initiate an operating cycle of theclutch a lever I38 which is pivoted as at I3I adjacent the locking plateI25 is provided having one end connected by means of a link I32 with thelocking plate I25. A spring I35 attached to the opposite end of thelever I38 tends to actuate the movement of the lever to cause link I32to swing the locking plate I25 about its pivot to disengage the camportion I25 from the shoulder I28 and start an operating cycle of thefeeding mechanism. Normally the clutch actuating lever I38 is held inthe position shown in Figure 23 by the lever I38 which carries a latchportion I39 for engaging a square pin I 48 disposed on the outer end ofthe lever I38. The spring I82 urges the lever I38 to remain in positionto contact the pin I48 when it is returned to its original position, asshown in Figure 23.

Upon rotation of the output shaft and cam member I21 the cam portion I25contacts the cam surface I42 on the locking plate I25 and forces it tothe right moving the shoulder I28 in position to engage the cam portionI26 and stop rotation of the output shaft when it reaches the positionshown in Figure 23. At the same time, the clutch tripping lever I38returns to its nonoperating locked position, as shown in Figure 23, sothat it is ready to be released to start another cycle of clutchoperation. In this way while the motor shaft rotates the input shaftcontinuously, the output shaft of the clutch rotates only when theclutch tripping arm I38 is raised to permit the spring I35 to move thelever I38 and connecting link I32 to shift the locking plate I25 so asto start the actuation of the clutch to rotate the output shaft I24 asingle complete revolution.

- Clutch tripping mechanism For tripping the lever I38 to bring aboutoperation of the clutch a bell crank member I45 is provided having thearms I46 and I41. This bell crank member is pivoted as at I48 andarranged so that the arm portion I46 engages underneath the extendedportion I49 of the lever I38. The other arm portion I41 carries a pinI58 which is positioned to be contacted by the latch means I52 which iscarried by the reciprocable feed control lever I88. When the lever isshifted forward by the stamper arm 43 of the address printing machine,the latch I52 engages the pin I58 of the bell crank I45 and upon returnof the stamper arm 43 after the printing operation, the lever I88 isshifted longitudinally to the right by the tension of the coil springH6. This movement rotates the bell crank I45 which raises the lever I38releasing the clutch tripping lever I38 which initiates the operation ofthe clutch.

When the printing head 43 swings upward and down a printing operation iseffected and the operating lever I88 of the feeding mechanism is placedin the position shown in Figure 4 so that when the printing head 43returns to its nonprinting position the actuating lever I88 will bemoved to the right bringing about a tripping of the clutch lever I38.Actuation of the clutch causes a limited feeding movement of the chain eearse of the tripping mechanism for actuating the clutch is illustratedin Figures 2, 3, 4, 5 and 6.

Manual feeding adjustment mechanism As shown in Figures 11 and 12, theoutput shaft I24 of the clutch drives the sprocket shaft I28 through thegear train comprising the mesh gears I55, I55, I51 and I58, By usingdifferent sets of gears the feeding mechanism can be changed so that thedistance which the sheets being printed upon are advanced after eachprinting operation can be made to accommodate different sized sheetforms.

Manual movement of the feeding mechanism is provided for by means of theattachment I68 on the gear I56 which permits manual disengagement of thegear I56 with the clutch operating gear I55. Manual adjustment of thefeeding mechanism is necessitated when threading the paper or sheets tobe printed upon in the machine I preparatory to starting printingoperation. The

0 can disengage the gear I56 from gear I55 and rotate the feedingmechanism'forward or backward, as desired, to adjust the position of thepaper threaded in the machine. Upon releasing the member I58 the springI62 forces the gear to slide axially into its normal position in meshwith gears I55 and I51, as shown in Figure 11.

Carbon feeding mechanism The mechanism for feeding the carbon sheetmaterial between the continuous paper sheet forms 58 and 5I isillustrated in Figures 11 to 22 inclusive. This part of the machineconsists of a cam plate member I65 which is fixed to rotate with thegear I51 and comprises the spaced cam portions I66. The cam portions I66are adapted upon rotation of the gear I51 to engage the shoulder I58 onthe member I18, as shown in Figures 12 and 19. The lower end of themember I18 is carried around the shaft I28 and is thus guided during itsmovement in the path of the cam portion I56 on the cam I65. Attached tothe upper end of the member I18 is a crank arm I12 which is secured to asleeve member I13 rotatably mounted on the shaft I15. This shaft isarranged to drive the knurled rollers I11 and I18 which are arranged todraw carbon paper between the continuous moving sheets 5| being printedupon. Axial movement of the sleeve relative to the shaft I15 isprevented by the U-shaped locating pin IBI which is positioned over thesleeve I13 and in engagement with the circular groove in the shaft I15,as illustrated in Figures 11 and 12.

Rotation of the shaft I15 is brought about at intervals, as the camportions I86 contact the shoulder I68 swinging the member I18 downwardand rotating the sleeve I13 through the ratchet and pawl member I88 andI84 associated With the spring actuated member I85. The member I85 isattached to the sleeve I13 and carries the pawl I84 which engages theratchet I83, and the shaft I15 is suitably fastened by means of the pinI81 to the ratchet I83, Rotation of the shaft I15 and knurled rollersI11 and "His effected by clockwise movement of the member I85 bythesleeve member I13 which motion is transferred to the shaft I15 by meansof the pawl I84 engaging the ratchet I83. Counterclockwise movement ofthe sleeve I13 and attached member I85, as shown in Figure 19, iseffected by the coil I89.

The member I85 is of elongated shape and the end opposite the spring I89is adapted to contact the bracket member I90 to limit its returnmovement under the action of the coil spring I89.

The knurled carbon sheet feeding rollers I11 and I18 are suitablyarranged in the frame I92 at the side of the continuous sheet forms soas to draw the carbon sheets transversely beneath the continuous formsfrom the feed rolls I94 arranged on the rack I95 on the opposite side ofthe machine, as shown in Figure 20. The carbon sheets 52 which areinterleaved between the paper forms are carried over the idler roll I96in the lower portion of the frame I92 and are carried between theknurled rollers I11 and I18, as illustrated in Figures 14 and 20.

Provision is made for disassembling the idler roller I96 by means of theremovable shaft I98 by removing the pin 288 engaging over the outer end,as illustrated in Figures 21 and 22. The knurled roller I18 is driven bythe lower knurled roller I11 through the gears 282 and 284 on the endsof the knurled roller shafts. Means is provided through the springpressed members 238 for separating the knurled roller I18 from the lowerroller I11 by rotating the shaft 283 by means of the knurled manualoperating means 201. The axial shafts of the carbon feed rolls I94 arepositioned in slots 2I0 in the supporting end frame pieces I95, asillustrated in Figure 17. Adjustment is provided for positioning of thecarbon sheet roller frame I 35 by means of the knurled adjusting screw2I2 located at the base of the frame, as illustrated in Figure 17. Eachof the carbon feed roll members I94 is equipped with spring actuatedbrake means 2I5 for preventing coasting of the rolls during operation ofthe machine.

Static electricity control Due to the development of static electricitybetween the carbon sheets 52 and continuous moving form sheets 58 andwhich results in a tendency to drag the carbon sheets along with themoving continuous paper sheet forms which are being printed, there isarranged between the sheets the copper strip members 2I8, as shown inFigures 16 and 20. These copper strips or equivalent electricalconnecting members are suitably retained on the end posts 220 and aguide strip 222 is arranged across the top of the sheets to maintain thecontinuous sheet forms in position to be contacted with the metal strips2I8 as the sheets are moved along under the printing head.

Suitable electrical conducting means is connected to the posts 220 forgrounding the electric charge induced by the moving paper sheets.

Modified carbon sheet holding mechanism In Figures 28 to 33 inclusive,there is illustrated a modified mechanism for retaining the carbonsheetsinterleaved between the continuous sheet forms when use is made ofcontinuous sheet forms which are folded lengthwise, such as indicated bythe paper sheets 224 as illustrated in Figure 29. In this instancetransverse movement of the carbon sheet is impossible. The sheets ofcarbon 225 are held on thin bars 226 which are supported on a spindlemeans 228 which in turn is mounted on the screw bars 229 and 231. The

carbon sheets are pasted or otherwise secured to the members 226 and arefloated between the sheets as illustrated in Figure 29.

The spring pressed hinged screw follower 230 is hinged as at 23I on thesupporting block 232 which is attached to the spindle 228 carrying thecarbon bars 226. One or more of the carbon heet retaining bars 226 maybe positioned in the spindle member 228 and clamped into position so asto hold the carbon sheet in between the folded continuous sheet forms,as illustrated in Figure 29. This clip is adapted to be swung inengagement with the screw threads 233 on the shaft 229 and upon rotationof the screw shaft 229 the block 232 and associated spindle carrying thecarbon sheet forms are moved longitudinally along the shaft. In thisinstance the screw shaft 229 replaces the shaft I in the mechanismillustrated in Figure 19.

Duplicate carbon holding mechanism, as illustrated in Figures 31, 32 and33, is provided on the opposite sides of the moving sheet forms asillustrated in Figure 28, and the gear 235 is arranged on the screwshaft 229 which drives-the opposite screw shaft 231 by means of thechain and sprocket 238 and 239, respectively. Paper side guide means 240is provided on the spindle 228 of the carbon sheet holders formaintaining the paper sheet forms in alignment as they pass along.

When the carbon sheet holders 226 have been moved along by thesupporting block member 232 to the end of the screw portions 233 on therod members 229 and 231 the operator will manually reset the carbonsheets at the other end of the screw shaft by raising the hinged clip230 which engages the screw threads 233 of the rod so as to allow thespring pressed plunger 242 to hold the hinged clip 238 out of engagementwith the screw threads. After the carbon sheet holders are positioned atthe opposite end of the screw thread the hinged screw follower 230 willbe reset to engage the screw and permit repeated movement of the carbonsheets. The member 228 which supports the carbon sheet rod mem- 5 bers226 is suitably guided on the rod 244, as

shown in Figure 30.

Operation In the operation of the machine as illustrated, the addressprinting machine is synchronized with the movement of the automaticfeeding control mechanism so that by means of the attachment continuouscopy sheet forms are automatically fed to the printing. position andthereafter printed uponandthenthe trippingmechanism on the feedingattachment actuates the clutch to bring about a predetermined accuratemovement of the continuous sheet forms so as to advance them out of theprinting machine and at the same time 0 actuate the carbon sheet feedingmechanism so as to move the carbon sheets to present new surface. In theautomatic feeder mechanism illustrated the continuous sheet forms arewithdrawn from a fan-folded pack and moved beneath the printingmechanism and thereafter ejected into a compartment and fan-folded intoa finished pack form.

It will be understood that different types of forms, continuous sheet orotherwise, may be used with this invention and that printing mechanismother than addressograph machines may be employed with the auxiliaryfeeding attachment of this invention.

. It will be understood also that this invention is not limited to theexact detail of construccontinuously driven in association with saidprinting machine for controlling the movement of sadi endless member,whereby said forms are advanced a predetermined distance and positionedin register for imprinting thereon; carbon sheet material interleavedwith said continuous sheet forms; means in association with said endlessmember for moving said carbon sheet in synchronism with the movement ofsaid forms, said carbon sheet moving in opposite direction to saidcontinuous sheet forms and a predetermined distance lesser than thedistance traveled by said sheet forms; and means for restacking theprinted continuous sheet forms in a fan-folded pack.

2. In combination with a printing machine, an auxiliary attachmentoperable in synchronism therewith through separate driving means whereincontinuous strip fan-folded stationery receives at longitudinally spacedintervals imprinted legends comprising: feeding'means adapted fordifferentially advancing in opposite directions superimposed strips offan-folded stationery material and carbon sheet material past animprinting positionin register with each other; a prime mover adapted todrive said feeding means separate from the prime mover of said printingmachine in synchronism therewith; means adapted to move said carbonsheet material longitudinally and in opposite direction to the movementof said stationery'material after each imprinting operation, said carbonsheet material being moved a distance lesser than the distance saidstationery material is moved; and means adapted intermittently toassociate the driving means of said printing machine and said auxiliaryattachment whereby the movement of said stationery material, carbonsheet material, and printing machine is brought into operativesynchronism.

WILLIAM C. PFEIFFER.

